where "!" is the factorial operator.
On the other hand, a combination is an un-
ordered collection of r distinct elements, taken
from a given set of n elements (again with
n r ³ ³ ; and n, r being natural numbers). The
0
number of r combinations is given by:
Example 1: Permutation. Determine how many
different 4-digit values can be produced using the
numbers 1 through 6.
Example 2: Combination. Determine how many
different 4-member groups can be organized in a
group of 8 individuals.
Exponential Display Formats
As already explained, the calculator can display
up to 10 digits. Larger values are automatically
displayed using exponential notation. In the case
of decimal values, you can select between NORM
1 and NORM 2 formats, which determine at what
point exponential notation is used.
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